<?php
/**
 * Smarty Internal Plugin Compile While
 *
 * Compiles the {while} tag
 *
 * @package    Smarty
 * @subpackage Compiler
 * @author     Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile While Class
 *
 * @package    Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_While extends Smarty_Internal_CompileBase {

	/**
	 * Compiles code for the {while} tag
	 *
	 * @param array  $args      array with attributes from parser
	 * @param object $compiler  compiler object
	 * @param array  $parameter array with compilation parameter
	 *
	 * @return string compiled code
	 */
	public function compile($args, $compiler, $parameter) {
		// check and get attributes
		$_attr = $this->getAttributes($compiler, $args);
		$this->openTag($compiler, 'while', $compiler->nocache);

		if (!array_key_exists("if condition", $parameter))
		{
			$compiler->trigger_template_error("missing while condition", $compiler->lex->taglineno);
		}

		// maybe nocache because of nocache variables
		$compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
		if (is_array($parameter['if condition']))
		{
			if ($compiler->nocache)
			{
				$_nocache = ',true';
				// create nocache var to make it know for further compiling
				if (is_array($parameter['if condition']['var']))
				{
					$compiler->template->tpl_vars[trim($parameter['if condition']['var']['var'], "'")] = new Smarty_variable(null, true);
				}
				else
				{
					$compiler->template->tpl_vars[trim($parameter['if condition']['var'], "'")] = new Smarty_variable(null, true);
				}
			}
			else
			{
				$_nocache = '';
			}
			if (is_array($parameter['if condition']['var']))
			{
				$_output = "<?php if (!isset(\$_smarty_tpl->tpl_vars[" . $parameter['if condition']['var']['var'] . "]) || !is_array(\$_smarty_tpl->tpl_vars[" . $parameter['if condition']['var']['var'] . "]->value)) \$_smarty_tpl->createLocalArrayVariable(" . $parameter['if condition']['var']['var'] . "$_nocache);\n";
				$_output .= "while (\$_smarty_tpl->tpl_vars[" . $parameter['if condition']['var']['var'] . "]->value" . $parameter['if condition']['var']['smarty_internal_index'] . " = " . $parameter['if condition']['value'] . "){?>";
			}
			else
			{
				$_output = "<?php if (!isset(\$_smarty_tpl->tpl_vars[" . $parameter['if condition']['var'] . "])) \$_smarty_tpl->tpl_vars[" . $parameter['if condition']['var'] . "] = new Smarty_Variable(null{$_nocache});";
				$_output .= "while (\$_smarty_tpl->tpl_vars[" . $parameter['if condition']['var'] . "]->value = " . $parameter['if condition']['value'] . "){?>";
			}

			return $_output;
		}
		else
		{
			return "<?php while ({$parameter['if condition']}){?>";
		}
	}

}

/**
 * Smarty Internal Plugin Compile Whileclose Class
 *
 * @package    Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Whileclose extends Smarty_Internal_CompileBase {

	/**
	 * Compiles code for the {/while} tag
	 *
	 * @param array  $args     array with attributes from parser
	 * @param object $compiler compiler object
	 *
	 * @return string compiled code
	 */
	public function compile($args, $compiler) {
		// must endblock be nocache?
		if ($compiler->nocache)
		{
			$compiler->tag_nocache = true;
		}
		$compiler->nocache = $this->closeTag($compiler, array('while'));

		return "<?php }?>";
	}

}

?>
